Are PCB Levels in Fish from the Canadian Great Lakes Still Declining?

Bhavsar, Satyendra P.; Jackson, Donald A.; Hayton, Alan; Reiner, Eric J.; Chen, Tony; Bodnar, John

doi:10.3394/0380-1330(2007)33[592:apliff]2.0.co;2

Cited by 90 publications

(49 citation statements)

References 31 publications

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“…Dünyada yapılan çalışmaların büyük bir çoğunluğu PCB'lerin canlı organizmalar üzerindeki birikimine ilişkin yapılan çalışmalardır. PCB'lerin balık, kabuklu su ürünleri, bitkisel su ürünleri ve planktonlardaki birikim seviyelerine ilişkin çalışmalar olduğu gibi (Metcalfe ve Metcalfe, 1997;Hong et al 1998;Roose et al 1998;Chiu et al 2000;Gucia et al 2002;Julshamn et al 2004;Covaci et al 2006;Bhavsar et al 2007;Rypel et al 2007;Parnell et al 2008;Bodiguel et al 2009), sediment tabakasındaki birikimi değerlendirmeye yönelik de birçok çalışma mevcuttur (Fernandez et al 2002;Eljarrat et al 2005;Fung et al 2005;Fu ve Wu, 2006;Zennegg et al 2007;Smith et al 2009). Türkiye'de bazı bölgelerde farklı çevresel ve biyolojik örneklerde poliklorlu bifenillere ilişkin araştırmalar yapılmış ve elde edilen değerlerin su ve sediment örnekleri için uluslararası kabul görmüş kriterlerin altında değerler olduğu (Fillmann et al 2002;Telli-Karakoç et al 2002;Bakan ve Ariman 2004;Erdoğrul et al 2005;Okay et al 2009), balık ve midye örnekleri için ise yine uluslararası kriterlerin altında değerler elde edildiği belirtilmiştir (Tanabe et al 1997;Küçüksezgin et al 2001;Telli-Karakoç et al 2002;Tolun et al 2007;Okay et al 2009).…”

Section: Sonuçunclassified

Poliklorlu Bifeniller ve Sucul Yaşam

Çakıroğulları¹,

Seçer²

2011

Ankara Üniversitesi Çevrebilimleri Dergisi

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Section: Sonuçunclassified

Poliklorlu Bifeniller ve Sucul Yaşam

Çakıroğulları¹,

Seçer²

2011

Ankara Üniversitesi Çevrebilimleri Dergisi

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“…Since at least the 1970s, PCB concentrations in predatory fish from the Great Lakes have exceeded the guideline for unlimited consumption of 105 ng/g ww (Bhavsar et al, 2007). Fish worldwide have elevated PCB concentrations .…”

Section: Case Study: Pcbsmentioning

confidence: 99%

“…This most likely reflects the fact that following the production ban, emissions dramatically declined from point sources of industrial manufacture and major uses. These declines, however, levelled off by the late 1980s and 1990s (Gewurtz and Diamond, 2003;DeVault et al, 1996;Hickey et al, 2006;Bhavsar et al, 2007).…”

Section: Case Study: Pcbsmentioning

confidence: 99%

“…Jeremiason et al, 1998;Meijer et al, 2003a;Gauthier et al, 2008;Szlinder-Richert et al, 2009). However, the levels of some of these banned compounds are hovering around levels that could still be problematic (Bhavsar et al, 2007;Fernie et al, 2008;Verboven et al, 2009). Several explanations have been proposed for the stubbornly elevated levels of some of the banned compounds, including their unanticipated persistence and slow release from large, uncontrollable reservoirs such as soils and sediments, and the ability of POPs released into the environment to cycle and recycle within and among environmental compartments (Bidleman et al, 2006;Meijer et al, 2003;Ockenden et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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The Chemicals that will not Go Away: Implications for Human Exposure to Reservoirs of POPs

Diamond

Harrad

2009

Persistent Organic Pollutants

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POPs continue to fascinate and at times disturb (horrify) researchers, policy-makers and the public. As earlier chapters of this book describe, POPs are found globally in every natural and disturbed ecosystem. Our understanding of the ability of POPs to cause a wide range of subtle adverse health effects at relatively low concentrations continues to grow. We continue to revise our estimates of their persistence upwards as monitoring shows their very slow degradation rates under a range of environmental conditions.In response to the continuing discovery of the persistence, bioaccumulative properties, and toxicity of POPs, regional, national and international policies ban the intentional production of compounds, such as polychlorinated biphenyls (PCBs), several organochlorine pesticides, such as mirex and dieldrin, and the brominated flame retardants polybrominated diphenyl ethers (penta-BDE and octa-BDE, and most recently, deca-BDE). Policies and programs have also targeted the unintentional production and release of POPs such as polychlorinated dibenzodioxins and furans (PCDD/Fs). Evidence of the success of these policies has been seen in immediate reductions of air concentrations, followed by declining concentrations in water bodies, soils, biota and our food supplies Persistent Organic PollutantsEdited by Stuart Harrad

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“…Concentrations declined rapidly after banning, in biota (French et al, 2006;Hickey et al, 2006) as well as in other compartments (Schneider et al, 2001). The decline is at present much slower, or even absent (Bhavsar et al, 2007c;Carlson et al, 2010). Nevertheless PCBs today remain a concern in French rivers.…”

Section: Introductionmentioning

confidence: 99%

Nationwide PCB congener pattern analysis in freshwater fish samples in France

Babut

Mathieu

Pradelle

et al. 2012

Knowl. Managt. Aquatic Ecosyst.

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Key-words: PCB, fish, congener pattern, statistics, metabolismThe 2006 european directive on polychlorodibenzodioxins and related compounds in foodstuffs prompted in France a nationwide monitoring study of freshwater fish contamination by these compounds. A database covering about 300 sites (2848 samples of 36 fish species) was obtained from this study. This database was used to explore congener pattern distributions, in order to identify typical sources and the impact of biotransformation on these sources. Fish ecological traits and fish size are the main factors explaining the overall PCB contamination in the two pre-identified categories of species (high or low propensity to accumulate hydrophobic compounds). Lipid content is also an influencing factor, but its relationship to other factors remains uncertain. Species show distinct congener patterns, related more to their physiology than to ecological traits. Spatial patterns were studied on selected sites having more than five individuals analysed -either chub (Squalius cephalus) or barbel (Barbus barbus), the most widespread species in the database -. We identified six patterns, which mainly differed in the respective proportions of congeners potentially biotransformed by fish. No connection to typical sources, e.g. technical mixtures, was identified. These patterns instead represent an ageing path of the initial mixtures; they could be used for setting remediation priorities. RÉSUMÉAnalyse à l'échelle nationale des profils de congénères de PCB dans la chair de poissons d'eau douce en France Mots-clés : PCB, poisson, profil de congénères, statistiques, métabolismeLa directive européenne fixant les teneurs maximales des polychlorodibenzodioxines et composés apparentés dans les denrées alimentaires, publiée en 2006, a provoqué en France la mise en oeuvre à l'échelle nationale d'une étude sur la contamination des poissons d'eau douce par ces composés. Il en a résulté une base de données incluant plus de 300 sites (2848 échantillons provenant de 36 espèces de poisson). Cette base de données a été utilisée pour explorer la distribution de profils de congénères, afin d'identifier des profils typiques de sources, ainsi que l'impact des processus de biotransformation sur ces sources. La taille des poissons et des traits écologiques comme la position dans le cours d'eau et le comportement alimentaire sont les principaux facteurs explicatifs du niveau de contamination par les PCB dans les deux catégories pré-identifiées d'espèces (tendance forte/faible à l'accumulation de composés hydrophobes). Le taux de lipides dans la chair musculaire des poissons exerce également une influence, dont la relation aux autres facteurs reste incertaine. Les profils de congénères diffèrent selon l'espèce, ce qui s'explique mieux par leur physiologie que par les traits éco-logiques mentionnés. Pour étudier les différences spatiales de profil, nous avons sélectionné les sites pour lesquels au moins 5 échantillons individuels de chevaine (Squalius cephalus) ou de barbeau (Barbus b...

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Are PCB Levels in Fish from the Canadian Great Lakes Still Declining?

Cited by 90 publications

References 31 publications

Poliklorlu Bifeniller ve Sucul Yaşam

Poliklorlu Bifeniller ve Sucul Yaşam

The Chemicals that will not Go Away: Implications for Human Exposure to Reservoirs of POPs

Nationwide PCB congener pattern analysis in freshwater fish samples in France

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